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VB.NET Discussion Thread
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Jun 15th, 2008

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how to call another form

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Hi to all

I have two forms, one is form1 for registration and the other one is form2 for my main menu. How to call the form2 if the user successfully register with the form1. The code in form 1 is me.close (to close the form1) then form2.show but it will not work.

Thanks in advance

Tirso

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tirso

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Jun 15th, 2008

Re: how to call another form

let us say you have a login button on the registration form which gets enabled on validation of registration details.

code for login button- form2.showdialog()

in the form_load for the 2nd form, do form1.hide()

and in the form closing event for the 2nd form, remember to do form1.close()

tuse

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Jun 15th, 2008

Re: how to call another form

To call form2 you must to make an object of form2 :

VB.NET Syntax (Toggle Plain Text)
Dim MainMenu as New Form2
MainMenu.show
Dim MainMenu as New Form2
MainMenu.show

To close form1 after called form2 :
- Don't use Me.Close cause it will close application.
- Use Dispose(), set it to false.
e.g :

VB.NET Syntax (Toggle Plain Text)
Dim MainMenu as New Form2
MainMenu.show
Me.Dispose(False)
Dim MainMenu as New Form2
MainMenu.show
Me.Dispose(False)

Jx_Man

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Posting Sensei

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Jun 19th, 2008

Re: how to call another form

Click to Expand / Collapse Quote originally posted by tuse ...

let us say you have a login button on the registration form which gets enabled on validation of registration details.

code for login button- form2.showdialog()

in the form_load for the 2nd form, do form1.hide()

and in the form closing event for the 2nd form, remember to do form1.close()

thank you so much. It's worked

tirso

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Jun 19th, 2008

Re: how to call another form

thank you so much to all of your replied. It's worked. Until next post

tirso

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Aug 14th, 2009

Re: how to call another form

Hi guys, can you help me in my vb.net project. The problem is that I need to call a form, but I also need to know the form who calls the next form. Because I plan to make an if statement so that the program will know which line of code to execute depending on the form who calls the next form.

It's a database program. And I already have this line of code for the savings account alone. I will need more line of codes for the Dollar and current accounts.

This line of code will read the database. It's a log-in form that accesses the database:

Dim cn As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;" & "Data Source=C:\Documents and Settings\Student\nrew\db1.mdb;")
Dim cmd As OleDbCommand = New OleDbCommand("Select * from clients where NAME= '" & TextBox1.Text & "' AND PIN = '" & TextBox2.Text & "' ", cn)

cn.Open()

Dim rdr As OleDbDataReader
rdr = cmd.ExecuteReader

If rdr.HasRows Then
rdr.Read()
NoAcc = rdr("NAME")
NoPin = rdr("PIN")
If (TextBox1.Text = NoAcc And TextBox2.Text = NoPin) Then NoAccmod2 = NoAcc
wdb.Show()
Me.Hide()

Else
MsgBox("Incorrect AccountName or PIN", MsgBoxStyle.Critical, "Sorry try again")
TextBox1.Clear()
TextBox2.Clear()

End If

Please help, the only thing I need is to have a reference on what form calls the next form.

Nrew123

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Aug 15th, 2009

Re: how to call another form

in my oppinion the easiest way would be to create an overloaded New and call it with parameter (byval caller as From)
example:

vb Syntax (Toggle Plain Text)
     Public Sub New(ByVal caller As Form)
        InitializeComponent()
        Select Case caller.Name
            Case "Form2"
 
            Case "Form1"
 
            Case Else
 
        End Select
    End Sub
     Public Sub New(ByVal caller As Form)
        InitializeComponent()
        Select Case caller.Name
            Case "Form2"

            Case "Form1"

            Case Else

        End Select
    End Sub

and call the new form like Dim formtest As New Form1(Me)

GeekByChoiCe

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